-
8/3/2019 4inventor 201 Part 3[1]
1/12
Inventor 201 Advanced part features and constraints
Sketch sharing, ribs, fillets & chamfers
1. Create a new sketch on the underside of the top surface of
the part. We will be making a bosswhich extends downward into the
inside of the part. (Ignore the unusual colors the application
color option was set to a different setting for the next two
screen shots. It is worth noting that thecolor scheme used to
denote geometry constraints changes with the display color
scheme.)
-
8/3/2019 4inventor 201 Part 3[1]
2/12
Inventor 201 Advanced part features and constraints
2. Project the X axis onto the sketch plane.
3. Draw a circle on the axis to the left of the center.
-
8/3/2019 4inventor 201 Part 3[1]
3/12
Inventor 201 Advanced part features and constraints
4. Dimension the circle as shown and exit the sketch.
5. Extrude the boss .25 in. off the inside surface.
-
8/3/2019 4inventor 201 Part 3[1]
4/12
Inventor 201 Advanced part features and constraints
6. Create a new sketch on the top surface of the part.
7. Project the boss (Extrusion3) onto the sketch plane and put a
Point, Hole Center at the center
of the projected circle. Exit the sketch.
-
8/3/2019 4inventor 201 Part 3[1]
5/12
Inventor 201 Advanced part features and constraints
8. Create a 0.377 in. ID hole from the top suface to the bottom
surface of the boss.
9. Since the next feature is on the same plane, well share
Sketch5 instead of defining a new
sketch plane. Right-click on Sketch5 in the Model browser and
select Share Sketch.
-
8/3/2019 4inventor 201 Part 3[1]
6/12
Inventor 201 Advanced part features and constraints
10. Draw a Two point rectangle across the projected axis as
shown:
11. Select the Coincident constraint.
-
8/3/2019 4inventor 201 Part 3[1]
7/12
Inventor 201 Advanced part features and constraints
12. Select the midpoint of one side of the rectangle and the
projected axis. This constrains that
side centered on the axis. Do the same for the opposite side of
the rectangle.
13. The rectangle is now constrained centered on the axis,
without having to dimension it in theZ axis.
-
8/3/2019 4inventor 201 Part 3[1]
8/12
Inventor 201 Advanced part features and constraints
14. Dimension the rectangle as shown to size and position it in
the X axis. Then exit the sketch.
15. Cut the rectangle out with the Extrude tool, using the To
Next extent.
-
8/3/2019 4inventor 201 Part 3[1]
9/12
Inventor 201 Advanced part features and constraints
16. Next we will create a web between Extrusion2 and Extrusion3.
To do this we need to define
sketch on the plane bisecting both extrusions in this case we
can use the XY Plane.
17. Project the intersecting edge of each extrusion (Project
Geometry)
-
8/3/2019 4inventor 201 Part 3[1]
10/12
Inventor 201 Advanced part features and constraints
18. Draw a line connecting the two projected lines. Make sure
the line is coincident with both
and perpendicular with the side of Extrusion4.
19. Set the line .180 in. below the bottom surface (the end of
the projected line) and exit thesketch.
-
8/3/2019 4inventor 201 Part 3[1]
11/12
Inventor 201 Advanced part features and constraints
20. Select the Rib tool Profile pointer and select the line you
just drew. Select just the one line
do not select the projected lines. Set the Thickness to 0.1 in.
and set it to extrude to both sides ofthe plane. Click OK.
21. The web should bridge between the two extrusions and the
bottom of the top surface of the
base.
-
8/3/2019 4inventor 201 Part 3[1]
12/12
Inventor 201 Advanced part features and constraints
22. With the Fillet tool, add a 0.03 in. fillet to the inside
edges as shown. Note that a fillet caneither add or remove
material, even in the same feature definition.
24. Chamfer the outside top edge 0.1 in. x 45 with the Chamfer
tool.
